Petrol-heated steam-generator.



M. A. NORMAND.

PETROL HEATED STEAM GENERATOR.

APPLICATION FILED OUT. 12 1908.

Patented July 6, 1909. 2 BHBETSSHEET 1.

M. A. NORMANID. PETROL HEATED STEAM GENERATOR.

APPLICATION FILED 0GT.12, 1908.

Patented July 6, 1909. 2 SHEETS-SHEET 2 U1 TED STATES PATENT OFFICE.

MARIE AUGUSTIN NORMAN'D, 0F HAVRE, FRANCE, ASSIGNOR TO ATELIERS ET CHANTIERS V AUGUSTIN NORMAND, OF HAVRE, FRANCE, A CORPORATION OF FRANCE.

PETROL-HEATED STEAM-GENERATOR.

Patented July 6, 1909;

Application filed OctobcrlZ, 1908. Serial No.457,423.

To all whom it may concern:

Be it known'that I, MARIE Aueusrm Non- MAND, a citizen of the French Republic, rcsiding at Havre, Department of the Seine lnfrieure, in France, have invented certain new and useful Improvements ,in Petrol- HeatedSteam-Generators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention has for its object a special arrangement of the burners and of the combustion chamber for heating steam generators of the type termed vertical tube steam generators by means of petrol.

In the accompanying drawings: Figure 1 represents a longitudinal section of the steam generator. Fi 2is a front elevation, half in section and hal in elevation.

The steam generator which is represented solely by way of example in the accompanying drawings is of the type which comprises two lower collectors connected with an i1p per collector by means of two nests of tubes.

The bottom otthe combustion chamber 1 is constituted by a lower hearth 2 formed of joined bricks. The lateral walls of this chamber are termed by those tubes 3. (arranged back to back or otherwise ,of the row of each nest'of tubes which are. most exposed tothe flames. The lower part of the lateral walls is formed of brickwork in the usual manner. Apertures enabling the hot gases to enter the nests of tubes are provided in the lateral walls constituted by the tubes.

A. brick partition 4 may be arranged be tweenthe nests of tubesat the upper part of the frusto-conica the combustion chamber to form the roof thereof.

In theiront of the steam generator, burners 5 5 arearranged; they inject petrol into nipples 66 which communicate with the combustion chamber.

The air so ply is taken through'the front part of the usto-conical chambers and by openings 7 formed in their lateral walls.

The nipples 6 are surrounded by a casing 8 which is provided with a number of swing doors 9. These doors open owing to the internal vacuum or reduction of pressure and permit of the passage of the air which enters the chambers 6 in order to maintain the combustion of the petrol.

The rear wall of the combustion chamber is constituted by a wall 10 in which a certain number of orifices 11 are formed. By means of this arrangement an air circulation is produced which cools the walls of the combustion chamber and insures the mixing of the combustion gases.

The casing 8 is located entirely outside of the combustion chamber and communicates with the latter only through the perforations 7 with which the nipples 6, applied to the front wall of the combustion chamber, are provided. These nipples are entirely inclosed by the casing 8, which forms an air chamber by which the supply of air to the burners is assured, the combustion itsclfnot taking. place within this, chamber, but within the nipples and the combustion chamber with which the latter communicates The receding description refers by way of examp e to a steam generator which receives the necessary on from the surrounding atmos here. The invention is however also app icable to cases in which air under pressure is so plied directly to the steam generator; in t is case the casing 8 is placed in communication with the compressor in any convenient manner.

Thearrangement of the IGSGIVOIIS or collecting drums, of the tubes and of the chimney may vary widely from thatrepresentcd in the accompanying drawings.

1 claim:

1. In a steam.generator, the combination of a combustion chamber, a nipple directly appliedv to and extending from one wall of said chamber and communicating directly with the latter, said nip 10 being provided with perforations in its slc e wall by whicli 'air isconducted into the combustion chamber, a

burner extendinginto the nipple and an air chamber inclosing said nipple and which suplics the same with air by means of said perorations.

, 2; In a steam generator, the combination with the combustion chamber, of a nip is applied directly to one wall of said cham er and provided in its side wall with a plurality of erforations forming air inlets through whlch air passes into said chamber, an air chamber inclosing the nipple, and a burner supported by the front wal of saidair chamher and entering the nipple.

3. The combination with a combustion chamber, and a perforated nipple extending therefrom, of an air chamber inclosing the nipple and provided with a swinging door which opens under the influence of a vacuum in the air chamber, and a burner cooperating with the nipple.

4. In a steam generator, the combination with the combustion chamber, of a nip le applied directly to one wall of said chaml ier and provided in its side wall with a plurality of perforations forming air inlets hrough which air passes into said chamber, an airchamber casing a'p lied directly to the wall of the combustion cliamber and inclosing said nipple, said casing being provided in its front 1 with means to admit airfand a burner coacting with said nipple.

5. In a steam generator, the combination with thecombustion chamber, of a plurality of nipples applied to one wall of said chamber and provide with perforations forming air inlets through which air passes into said chamber, burners coacting with the several nipples, and an air-chamber casing applied to said wall of the combustion chamber and which incloses all of said nipplesand supplies the same with air.

In testimony whereof I aflix my signature, in presence of two witnesses.

MARIE AUGUST IN NORMAND. Witnesses:

JOHN PRESTON BEECHER, CONSTANT J UERARD. 

